The quotations of

Henri Poincaré

French mathematician, physicist and engineer

1854–1912

8 quotes, most often on Science, Thinking and Facts.

Science is facts; just as houses are made of stones, so is science made of facts; but a pile of stones is not a house and a collection of facts is not necessarily science.
- Facts
- Science
To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection.
Preface, Dover abridged edition (1952), p. xxii
- Thinking
Scientists believe there is a hierarchy of facts and that among them may be made a judicious choice. They are right, since otherwise there would be no science…
The Value of Science (1905)
- Facts
- Science
The Scientist must set in order. Science is built up with facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house.
Science and Hypothesis (1901), Ch. IX: Hypotheses in Physics, Tr. George Bruce Halsted (1913)
- Facts
- Science
Sociology is the science which has the most methods and the least results.
Science and Method (1908), Part I. Ch. 1: The Selection of Facts, p. 19
- Clever Jabs
- Science
It is by logic that we prove, but by intuition that we discover. To know how to criticize is good, to know how to create is better.
Science and Method (1908), Part II. Ch. 2: Mathematical Definitions and Education, p. 129
- Science
- Thinking
It is only through science and art that civilization is of value.
The Value of Science (1905), Ch. 11: Science and Reality
- Art
- Science
Thought is only a gleam in the midst of a long night. But it is this gleam which is everything.
The Value of Science (1905), Ch. 11: Science and Reality
- Thinking

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